    * {
        padding: 0px;
        margin: 0px;
        font-family: "Microsoft YaHei";
    }

    html,
    body {
        background: #ddf0ed;
        height: 100%;
        overflow: hidden;
    }

    .header {
        width: 100%;
        height: 100px;
        position: fixed;
        top: 0;
        z-index: 2;
    }

    .title {
        font-size: 2.5em;
        padding: 0 5px;
        color: transparent;
        font-weight: 900;
        text-shadow: 0 10px 13px rgba(136, 136, 136, 0.5);
        height: 100%;
        margin-left: 40px;
        float: left;
        line-height: 100px;
        overflow: hidden;
        background-image: -webkit-linear-gradient(left, rgba(216, 27, 96, 1), rgba(128, 222, 234, 1) 25%, rgba(216, 27, 96, 1) 50%, rgba(128, 222, 234, 1) 75%, rgba(216, 27, 96, 1) 100%);
        -webkit-background-clip: text;
        background-size: 200% 100%;
        -webkit-animation: streamer 4s linear infinite;
                animation: streamer 4s linear infinite;
    }

    .admin {
        position: absolute;
        bottom: 10px;
        right: 40px;
        font-size: 1.1em;
    }

    .loginout {
        text-decoration: none;
    }

    .loginout:hover {
        color: red;
    }

    .side {
        margin-top: 60px;
        width: 10%;
        height: 100%;
        position: fixed;
        min-width: 200px;
        top: 0;
    }

    .item {
        margin-top: 105px;
        
    }

    
    .item li {
        font-size: 1.2em;
        list-style: none;
        height: 50px;
        line-height: 50px;
        -webkit-transition: all .2s ease-in-out;
        transition: all .2s ease-in-out;
        display: block;
        position: relative;
        cursor: pointer;
    }
    .item li:hover{
        transition: all .2s ease-in-out;
        box-shadow: 0 0 3px 3px rgba(229, 57, 53, 0.5);
    }
    .item li:active{
        background: #aaa;
    }

    .item li::before {
        content: "";
        height: 0;
        width: 0;
        border-top: 2px solid #777;
        border-left: 2px solid #777;
        display: block;
        position: absolute;
        box-sizing: border-box;
        opacity: 0;
        -webkit-transition: all .2s ease-in-out;
        transition: all .2s ease-in-out;
    }

    .item li::after {
        content: "";
        height: 0;
        width: 0;
        border-bottom: 2px solid #777;
        border-right: 2px solid #777;
        display: block;
        position: absolute;
        box-sizing: border-box;
        bottom: 0;
        right: 0;
        opacity: 0;
        -webkit-transition: all .2s ease-in-out;
        transition: all .2s ease-in-out;
    }

    .item li:hover::before,
    .item li:hover::after {
        opacity: 1;
        height: 100%;
        width: 100%;
        -webkit-transition: all .2s ease-in-out;
        transition: all .2s ease-in-out;
    }

    .item img {
        height: 24px;
        width: 24px;
        margin-left: 40px;
        margin-right: 5px;
    }
    .content_warp {
        background-color: #ffffff;
        margin: 110px 30px 30px 220px;
        padding:20px;
        box-sizing: border-box;
        border: 5px solid #99BDFF;
        border-radius: 10px;
        box-shadow: 0 0 10px;
        height: calc(100% - 160px);
        min-height: calc(100% - 560px);
                overflow: auto;
    }



    .content_warp button {
        background: cornflowerblue;
        display: inline-block;
        margin-right: 20px;
        margin-bottom: 15px;
        padding: 5px 10px 6px;
        color: #fff;
        border-radius: 7px;
        position: relative;
        cursor: pointer
    }

    .content_warp img {
        height: 20px;
        width:20px;
        margin-right: 5px;
    }

    .content_warp img:hover {
        -webkit-filter:brightness(.5);
        }
    .content {
        border-radius: 10px;
        background: inherit;
        display: none;
    }
    #file-list p{
        margin: 0 auto;

    }
    .check img{
        border: 2px solid #99BDFF;
        border-radius: 1px;
        margin-right: 0px;
        margin-left: 0px;
    }
    .show {
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
    }

    .clicked {
        color: cornflowerblue;
        border-radius: 10px;
        background-color: gainsboro;
    }
    img {
        width: 60%;
        height: 50%;
    }

    .content>* {
        margin: 20px;
    }

    form>* {
        margin: 10px 0;
    }

    input[type=file] {
        background: #bbb;
        border: none;
        border-radius: 3px;
        height: 30px;
        color: #fff;
    }
    
    input[type="file" i]::-webkit-file-upload-button {
        height: 30px;
        outline: none;
        color: #fff;
        border: none;
        border-radius: 3px;
        margin-right: 10px;
        background-image: -webkit-linear-gradient(top, #428bca 0, #2d6ca2 100%);
        background-image: linear-gradient(to bottom, #428bca 0, #2d6ca2 100%);
        background-color: #2d6ca2;
    }

    @-webkit-keyframes streamer {
        0% {
            background-position: 0 0;
        }
        100% {
            background-position: -100% 0;
        }
    }

    @keyframes streamer {
        0% {
            background-position: 0 0;
        }
        100% {
            background-position: -100% 0;
        }
    }
